Intent to Ship: CSS Logical Overflow
Rune Lillesveen
Contact emails
fut...@chromium.orgExplainer
NoneSpecification
https://drafts.csswg.org/css-overflow-3/#overflow-controlSummary
The overflow-inline and overflow-block CSS properties allow setting overflow in inline and block direction relative to the writing-mode. In a horizontal writing-mode overflow-inline maps to overflow-x, while in a vertical writing-mode it maps to overflow-y.
Blink component
Blink>CSSTAG review
NoneTAG review status
Not applicableRisks
Interoperability and Compatibility
The relevant properties overflow-block and overflow-inline are part of Interop 2025. Firefox already ships and It's highly likely that Safari also will ship this year.
Gecko: Shipped/Shipping
WebKit: Positive Accepted as part of interop 2025
Web developers: No signals
Other signals:
WebView application risks
Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?
None
Debuggability
Will be possible to inspect and change via devtools like any other property. In particular the existing overflow properties.
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?
YesIs this feature fully tested by web-platform-tests?
Yeshttps://wpt.live/css/css-overflow/inheritance.html https://wpt.live/css/css-overflow/logical-overflow-001.html https://wpt.live/css/css-overflow/parsing/overflow-computed.html https://wpt.live/css/css-overflow/parsing/overflow-invalid.html https://wpt.live/css/css-overflow/parsing/overflow-valid.html
Flag name on about://flags
--enable-blink-features=CSSLogicalOverflowFinch feature name
CSSLogicalOverflowRequires code in //chrome?
FalseTracking bug
https://crbug.com/41489999Estimated milestones
| Shipping on desktop | 135 |
| DevTrial on desktop | 77 |
| Shipping on Android | 135 |
| DevTrial on Android | 77 |
| Shipping on WebView | 135 |
Anticipated spec changes
Open questions about a feature may be a source of future web compat or interop issues. Please list open issues (e.g. links to known github issues in the project for the feature specification) whose resolution may introduce web compat/interop risk (e.g., changing to naming or structure of the API in a non-backward-compatible way).
NoneLink to entry on the Chrome Platform Status
https://chromestatus.com/feature/4728308937523200?gate=5083464346632192
Mike Taylor
On 2/7/25 8:19 AM, Rune Lillesveen wrote:
Contact emails
fut...@chromium.org
Explainer
None
Specification
https://drafts.csswg.org/css-overflow-3/#overflow-control
Summary
The overflow-inline and overflow-block CSS properties allow setting overflow in inline and block direction relative to the writing-mode. In a horizontal writing-mode overflow-inline maps to overflow-x, while in a vertical writing-mode it maps to overflow-y.
Blink component
Blink>CSS
TAG review
None
TAG review status
Not applicable
Risks
Interoperability and Compatibility
The relevant properties overflow-block and overflow-inline are part of Interop 2025. Firefox already ships and It's highly likely that Safari also will ship this year.
Gecko: Shipped/Shipping
WebKit: Positive Accepted as part of interop 2025
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Rune Lillesveen
On 2/7/25 8:19 AM, Rune Lillesveen wrote:
2 years ago Apple indicated that they would prefer official position requests for anything related to Interop (see https://groups.google.com/a/chromium.org/g/blink-dev/c/HxqAcgnTs8o/m/I_Fx6FoRBQAJ). Until they've told us otherwise, can we do the same here?
Philip Jägenstedt
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Mike Taylor
LGTM2
Chris Harrelson
To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/7d01bd60-0a49-460e-9891-e17232f02ea2%40chromium.org.